Measurement Computing USB-5203 - Manual (Page 3)

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Table of Contents
Preface
About this User’s Guide ....................................................................................................................... 5
What you will learn from this user's guide ......................................................................................................... 5
Conventions in this user's guide ......................................................................................................................... 5
Where to find more information ......................................................................................................................... 5
Chapter 1
Introducing the USB-5203 .................................................................................................................... 6
Logging data with the USB-5203 ..................................................................................................................................... 6
Functional block diagram ................................................................................................................................... 7
Chapter 2
Installing the USB-5203 ........................................................................................................................ 8
Unpacking........................................................................................................................................................... 8
Installing the software ........................................................................................................................................ 8
Installing the hardware ....................................................................................................................................... 8
Firmware revision 2.12 and earlier ................................................................................................................................... 8
Firmware revision 3.0 and later ........................................................................................................................................ 8
Configuring the hardware ................................................................................................................................... 9
Configuring data logging options...................................................................................................................................... 9
Calibrating the hardware..................................................................................................................................... 9
Factory calibration ............................................................................................................................................................ 9
Field-calibration ................................................................................................................................................................ 9
Chapter 3
Sensor Connections ........................................................................................................................... 10
Screw terminal pin out ...................................................................................................................................... 10
Sensor input terminals (C0H/C0L to C7H/C7L) ..............................................................................................................10
Current excitation output terminals (±I1 to ±I4) ..............................................................................................................11
Four-wire, two sensor common terminals (4W01 to 4W67) ............................................................................................11
Two sensor common terminals (IC01 to IC67) ................................................................................................................11
Digital terminals (DIO0 to DIO7) ....................................................................................................................................11
CJC sensors ......................................................................................................................................................................11
Power terminals (+5V) .....................................................................................................................................................11
Ground terminals (GND) .................................................................................................................................................11
Thermocouple connections ............................................................................................................................... 11
Wiring configuration ........................................................................................................................................................12
RTD and thermistor connections ...................................................................................................................... 12
Two-wire configuration ...................................................................................................................................................13
Three-wire configuration .................................................................................................................................................14
Four-wire configuration ...................................................................................................................................................14
Semiconductor sensor measurements ............................................................................................................... 15
Wiring configuration ........................................................................................................................................................15
Digital I/O connections ..................................................................................................................................... 16
Configuring the DIO channels to generate alarms ...........................................................................................................16
Chapter 4
Functional Details ............................................................................................................................... 17
Thermocouple measurements ........................................................................................................................... 17
Cold junction compensation (CJC) ..................................................................................................................................17
Data linearization .............................................................................................................................................................17
Open-thermocouple detection (OTD) ..............................................................................................................................17
RTD and thermistor measurements .................................................................................................................. 18
Data linearization .............................................................................................................................................................18
External components ........................................................................................................................................ 18